189272831 has 8 divisors (see below), whose sum is σ = 206744400. Its totient is φ = 171845440.

The previous prime is 189272791. The next prime is 189272857. The reversal of 189272831 is 138272981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 189272831 - 2¹⁴ = 189256447 is a prime.

It is a super-2 number, since 2×189272831² = 71648409109509122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189272891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1736 + ... + 19533.

It is an arithmetic number, because the mean of its divisors is an integer number (25843050).

Almost surely, 2^189272831 is an apocalyptic number.

189272831 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

189272831 is a deficient number, since it is larger than the sum of its proper divisors (17471569).

189272831 is a wasteful number, since it uses less digits than its factorization.

189272831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22089.

The product of its digits is 48384, while the sum is 41.

The square root of 189272831 is about 13757.6462739816. The cubic root of 189272831 is about 574.1553632951.

The spelling of 189272831 in words is "one hundred eighty-nine million, two hundred seventy-two thousand, eight hundred thirty-one".